Pump attachment.



N9"- 739,480. a PATBNTED SEPT. 22, 1903.

I G. H.D"AVEN'PORT.

PUMP ATTACHMENT. APPLICATION FILED HAY 26,'1903 N0 MODEL.

| v as co morgu'moq WASNXMQYON u c Patented September 22, 1903.

PATENT ()FFICE.

GEORGE H. DAVENPORT, ,OF CHADRON, NEBRASKA.

PUM P'AT f Ao MEN SPECIFICATION forming part'of Letters rat jent No.739,480, dated. September 22, 1903. Application filed May 26; 1903.seatin 158,892. (uo a lo To all whom/it may cancer-re:-

Be itknown that I, GEORGE H. DAVENPORT,

a citizen of the'United States; residing at Chadron, in the countyof'Dawes-and -State of Nebraska, have invented certain new and usefulImprovements in PumpAttachments; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertain's-to'm'akeand usethe same. I

water will be removed to or below the freez f ing-point.

A further object of my lnventionis to pro-;

vide means for discharging the water without disturbing the curbing ofthe well-cistern or the like.

Other objects and advantages will be hereinafter made clearly apparent,reference being had to the accompanying drawings, which are made a partof this application, and in which- Figure 1 shows a side elevation of apump provided with my attachment. Fig. 2 is a detail of my attachmentinlongitudinal section, while Fig. 3 showsa detail of the threaded valveor pin provided with a limiting device or stop to prevent said valve orpin from being casually withdrawn from its seat.

The various elements of my invention and cooperating features will forconvenience be designated by numerals, the same numeral applying to asimilar part throughout the several views.

Referring to the numerals onthe drawings, 1 indicates a pump-stock, ofthe usual or any preferred construction, which is provided at a partbelow the freezing-point with my improved water-releasing valve,comprising the body portion 2 and having a threaded anchoring-terminal3, designed to be seated in a suit able aperture provided in thepump-stock, said body portion having a tubular bore throughout itsentire length and throughout the length of the threaded branch orterminal 3, as indicated by the numeral 4. The body portion of the valve2 is also formed with a "depending branch 5, which is tubular in form,

the tubular bored therein registering with or being a continuation ofthe bore 4 in a contiguous part of the body of the valve. The bores 4and6 lead into the threaded bore 7,

in'whichisadapted to move longitudinally the threaded pin'or valveproper, 8, the upper end of which extends'loosely through an opening in'the'br'acket 9, a check-pin 9 being extended throughthe' stem 8 toprevent casual withdrawal of 'the-point from its operative home initsseat'saidconical end will close communication between the bores 4 and6 and prevent the escape'of water from the pumpstock lwith which thebore 4 communicates.

For convenience in casting the body portion 2 and forming the bores 4and 6 therein the bore 6- may be started from the inner side of the bodyportion 2, slightly above the threaded stem 3, and the entrance orbeginning of said hole or boremay be permanently closed by a suitablethreaded plug 10 or the equivalent thereof. 1. Y

The upper end'of the threaded valve stem or member Sis provided with"'across-head 11, pivotally secured in' a recess in said head,

as bypassing a pin through the aperture 12 into the registering aperturein said crosshead 8, whereby the lower bifurcated end of the controllingrod 13; will 'rest with its branches upon each end of the cross-head,the upper end of said controlling-rod being provided with a suitablecrank arm oi handle, whereby it may be easily turned in eitherdirection. Y

By reference to Fig. 3 it will be-seen that the pin 14 is extendedthrough the opening 12 into an aperture in the depending blade 15 of thecross-head 11 and that the branches 16 of the controlling-stem 13pivotally engage with the branches of the cross-head 11, thus providinga form of toggle-joint which will permit the rod 13 to be moved awayfrom the pump-stock when it is desired to turn the same, a suitableslotted opening 17 being formed in. the base-section 18 of the pumpstockfor this purpose.

When the threaded member 8 is raised by properly rotating the same inits threaded bore, it is obvious that the bores 4 and 6 are disposed incommunication with each other and that the water within the pump-stockwill be discharged therefrom. on a level with the bore 4. When, however,the valve-stem 8 is turned securely home in its seat, communicationbetween the bores 4 and 6 will be wholly cut offby the lower end of saidstem, thereby preventing the escape of the water until said valve-stemis again elevated. It will thus be seen that I have provided a simpleform of safety attachment for pump-stocks, whereby the water inthepump-stock may be easily and quickly removed therefrom below thefreezing-point, thus preventing damage to the pump, which wouldotherwise result.

My attachment may be made of any preferred material and any desired sizedeemed most suitable for the purpose and being complete in itself may bereadily applied to a pump of any character or pattern. I also desire itto be understood that instead of using the form of controlling-rod 13and cross-head 11 to operate the valve-stem 8, as shown in the drawings,a rod having a wedge-shaped point adapted to take into the slot in thevalve-stem 8 may be employed, or a socketwrench or the like may beequally advantageously used.

Believing that the advantages and manner of using my improved attachmentfor pumps have thus been made clearly apparent,further description isdeemed unnecessary.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

The herein-described safety attachment for pumps, comprising a bodyportion having communicating bores 4 and 6, the threaded bore 7 in theupper end of said body having a seat at its lower end, said boreconnecting the bores 4 and 6, a threaded stem fitting said bore 7 andhaving a conical lower end, a bracket designed to guide said valve-steminto its seat, means to prevent the casual withdrawal of saidvalve-stem, and a controllingrod for said stem having a universal 0rswivel connection with the upper end thereof whereby the stem may berotated in either direction, all combined substantially as specified andfor the purpose set forth.

In testimony whereof. I affix my signature in presence of two witnesses.

GEORGE H. DAVENPORT. Witnesses:

WALTER M. BARE, 0. U. LENINGTON.

